communications of the "van der waals-fund" Contribution to the theory of the influence of pressure on the electrical resistance of metals / M.H. Lenssen and A. Michels communications of the "van der waals-fund" Isotherms of CO2 between 0ÿê and 150ÿê and pressures from 16 to 250 atm (amagat densities 18-206) / by A. Michels and C. Michels $ … communications of the "van der waals-fund" Isotherms of methane between 0ÿê and 150ÿêC for densities up to 225 amagat : calculated specific heat, energy and entropy in the same region / … communications of the "van der waals-fund" influence of pressure on the solubility of gases / A. Michels, J. Gerver and A. Bijl Major General Simon de Waal, ‘the Hero of Tarakan’ and Territorial Commander of Central Java: a study on the role of one of the most …